ITU H.140:1988
ITU H.140:1988 A Multipoint International Videoconference System
Table of Contents
1Scope2Generalrequirements
3Synchronizationofbitstreams
3.1Clocksynchronization
3.2Framesynchronization
4MCUandcodecuseofTS2oddformultipoint
conferenceapplications
5Audioprocessing
6Switchingdecisioncriteria
7MCUprocedureforsourceswitching
8Protocolsforwhoisseeninamultipointconference
8.1Automaticmode
8.2Controlusingmessagechannel
9Transmissionofgraphicsduringmultipoint
9.1Automaticmode
9.2ManualMode
10Transmissionofdataduringmultipoint
10.1Fullyautomaticmode(i.e.nomessagechannel)
10.2Operationwithmessagechannel
11OutlineofoutputfromMCU
12Multipointconferenceconfigurations
12.1Terrestrialconfiguration
12.2Possiblesatelliteconfigurations